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J T TREES ANVIL FOR STEAM HAMMBRS Patg nted Nov 16 1886 A A i Q AUNITED STATES PATENT OFFICE.

JOSEPH T. TREES, OF MGKEESPORT,PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO THOMAS D. WOOD, OF SAME PLACE.

ANVIL FOR STEAM-HAMMERS.

/ SPECIFICATION forming part of Letters Patent No. 352,897, dated'November 16, 1886.

Application filed July 29, 1886. Serial No. 209,372. (No model.) 7

To all whom it may concern:

Be it known that I, Josnrrr T. Teens, residingat McKeesport, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, haveinvented or discovered i 5 spective of one of the filling-blocks.

The invention herein relates to certain improvements in the manner of securing anvils or dies of steam-hammers to the anvil-blocks. The usual means employed for this purpose is to form a transverse recess across the top of the anvil-block, the sides of said recess being formed vby overhanging walls, and into this recess is keyeda dovetailed projection formed on the under side of the anvil. It frequently occurs, however, that the rebound of the anvil from the stroke of the hammer, especially if the anvil be formed of steel, will break off the.

overhanging walls, or a portion thereoflthus rendering it impossible to secure the anvil in 0 place, and necessitating a renewalof the anvilblocka very expensive and laborious opera.

tion. Another great sourceof annoyance in operating steam-hammers is the dropping of the scale down along the sides of the anvil- 3 5 block, and then working in between the anvilblock and the foundation, thereby throwing the block and anvil out of line.

The objectof the invention herein is to so secure the anvil to the block as to greatly 4o diminish the liability of the breakage of any of the parts, and also to provide for the ready renewal of such parts in case of breakage; and it is a further object of the invention herein to prevent the scale from working down along the block, and finally in between the block and foundation. To these ends the invention consists, in general terms, in the construction and combination of parts, sub'stantially as hereinafter described and claimed. 50. The anvil-block 1, formed of cast-iron, is of the usual form andshape, and is arranged on a suitable foundation in the usual manner. In the upper face of the block is formed a transverse recess or groove, 2, having vertical side walls, as shown. This groove is made considerably wider than the projection 3 on -the under side of the anvil 4, and against the vertical side-walls are placed filling-blocks 5, having one vertical side wall 6, the opposite side wall 7 being inclined, as shown. The insertion of these filling-blocks 5 into the recess 2 serves to contract said recess to the proper size, and also to impart'thedesired undercut to the side walls for the reception of the dovetailed projection 3 on the anvil. After the .anvil has been placed in posit-ion on the block keys 8 are driven in between the filling-blocks and the projection 3, thereby firmly securing the anvil in place. In'forder to prevent the filli ng-blocks from working out longitudinally, the under side is inclined from the center toward the ends, as shown, thus forming an enlargement or proj ection,'12, a correspondinglyshaped groove being formed in the bottom of the recess 2, adjacent to the side walls, for the reception of the filling-blocks.

It is evident that as long' as the anvil remains in position over the; filling-blocks the latter. cannot move out of position. I

.By tightly keying the filling-blocks and the projection 3 in the recess 2 itis practically impossible to lift the anvil from the block, as any upward movement would tend to turn the filling-blocks around'their longitudinal axis; but such a movement is obviously impossible. 85

In case of the breakage'of the filling-blocks,

the only parts at all liable to be broken, it is very easy to replace them with slight expense.

Around the anvil-block, a short distance from the top, is formed a groove, 9, in which is placed the inwardly-bent flange of the apron 10, surrounding the block and resting at its lower end .on the standing plate 11. Any scale that may be, formed" during the use of 9 the hammer will drop down on the apron, and

thence to the standing plate, from which it can 1 easily be removed.

I claim herein as my invention 1. The combination of an anvil-blockhav- I00 ing a transverse recess therein, said recess havin the block, and an anvil having a dovetailed ing vertical side walls, filling-blocks having projection, substantially as set forth. their outer walls vertical and their inner walls 3. The combination of an anvil-block and r 5 undercut, and an anvil having a dovetailed an apron closely encircling the block near its 5 projection, substantially as set forth. top, and flaring from thence toward the stand- 2. lhe combination of an anvil-block having plate, substantially as set forth.

ing a transverse recess therein having vertical In testimony whereof I have hereunto set side walls, filling-blocks having their side my hand.

walls constructed as described, the under sides JOSEPH T. TREES. 10 provided with projections or enlargements Witnesses:

adapted to engage corresponding openings or DARWIN S. WOLCOTT,

grooves in the bottom of the transverse recess R. H. WHI'ITLESEY. 

